If we compare a galvanic cell with an electrolytic cell, it is true to state that
A - VCE - SSCE Chemistry - Question 17 - 2011 - Paper 1
Question 17
If we compare a galvanic cell with an electrolytic cell, it is true to state that
A. in a galvanic cell reduction occurs at the negative electrode.
B. in both cells ... show full transcript
Worked Solution & Example Answer:If we compare a galvanic cell with an electrolytic cell, it is true to state that
A - VCE - SSCE Chemistry - Question 17 - 2011 - Paper 1
Step 1
A. in a galvanic cell reduction occurs at the negative electrode.
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Answer
This statement is incorrect. In a galvanic cell, reduction occurs at the cathode, which is the positive electrode.
Step 2
B. in both cells the anode is positive and the cathode is negative.
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Answer
This statement is also incorrect. In a galvanic cell, the anode is negative and the cathode is positive, while in an electrolytic cell, the situation is reversed: the anode is positive and the cathode is negative.
Step 3
C. in an electrolytic cell oxidation occurs at the cathode.
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Answer
This statement is misleading. In an electrolytic cell, oxidation occurs at the anode, not the cathode. The cathode is where reduction occurs.
Step 4
D. in both cells reduction occurs at the cathode.
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Answer
This statement is correct. In both galvanic and electrolytic cells, reduction occurs at the cathode.
